Comment updates in asm files.

arm/aes-decrypt-internal.asm

arm/aes-encrypt-internal.asm

arm/memxor.asm

sparc32/aes-decrypt-internal.asm

sparc32/aes-encrypt-internal.asm

sparc32/arcfour-crypt.asm

sparc64/aes-decrypt-internal.asm

sparc64/aes-encrypt-internal.asm

sparc64/arcfour-crypt.asm

testsuite/salsa20-test.c

x86/aes-decrypt-internal.asm

x86/aes-encrypt-internal.asm

x86/arcfour-crypt.asm

x86/camellia-crypt-internal.asm

x86_64/camellia-crypt-internal.asm

x86_64/salsa20-crypt.asm

x86_64/serpent-decrypt.asm

x86_64/serpent-encrypt.asm

x86_64/umac-nh-n.asm

x86_64/umac-nh.asm